NMML Small Cetacean Aerial Survey 1997

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說明

Original provider: National Marine Mammal Laboratory Dataset credits: National Marine Mammal Laboratory Abstract: Aerial surveys was conducted in 1997 progressing from east to west, to estimate abundance of the Southeast Alaska (SEA, 9,844 km survey effort), Gulf of Alaska (GOA, 10,127 km survey effort), and Bering Sea (BS, 7849 km survey effort) harbor porpoise stocks. In addition, 1355 km of survey effort during a Cook Inlet beluga survey were analyzed to add to the coverage for the GOA stock. Data from an independent observer concentrating on the trackline was used to estimate perception bias. Significant differences in g(0) and effective strip width (ESW) were found between the survey conducted in 1997 and the 1998 and 1999 surveys, therefore 1997 was treated separately. In both analyses, g(0) was dependent on visibility reported by observers, and in the 1997 data ESW was dependent as well. The 1997 survey included the inland waters of southeastern Alaska and the eastern Gulf of Alaska from Dixon Entrance to Cape Suckling Purpose: A 3-year survey began in 1997 to complete a new abundance estimate by 1999. This survey will also include an abundance estimate for Dalls porpoise (Phocoenoides dalli). Once the 3 years of surveys are completed, the data will be used to estimate annual abundance of harbor porpoise and Dalls porpoise, which is one of the key pieces of information needed to manage marine mammal-fishery interactions, as required under the Marine Mammal Protection Act. Supplemental information: Although the previous harbor porpoise surveys (1991- 1993) used a vessel platform for the inside waters of Southeast Alaska (Dahlheim et al. 1992, 1993, 1994), the current survey was conducted entirely from aircraft.

資料紀錄

此資源出現紀錄的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。核心資料表包含 602 筆紀錄。

此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。

版本

以下的表格只顯示可公開存取資源的已發布版本。

如何引用

研究者應依照以下指示引用此資源。:

Hobbs, R. 2004. NMML Small Cetacean Aerial Survey 1997. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/115) on yyyy-mm-dd.

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 OBIS-SEAMAP。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF 註冊

此資源已向GBIF註冊，並指定以下之GBIF UUID: cb6a64b7-d290-4b7c-a23c-052882c96d83。 OBIS-SEAMAP 發佈此資源，並經由Ocean Biodiversity Information System同意向GBIF註冊成為資料發佈者。

關鍵字

Occurrence,Aircraft,Sightings,harbor porpoise,survey,aerial survey,cetacean; Observation; Occurrence

外部資料

此資源尚有其他格式可用

OBIS-SEAMAP Dataset Page	http://seamap.env.duke.edu/dataset/115 UTF-8 Interactive map
FGDC Metadata	http://seamap.env.duke.edu/dataset/115/xml UTF-8 XML

聯絡資訊

Roderick Hobbs

擁有者 ●
出處 ●
連絡人

Primary contact

National Marine Mammal Laboratory

Rod.Hobbs@noaa.gov

OBIS-SEAMAP

元數據提供者 ●
散布者

Marine Geospatial Ecology Lab, Duke University

A328 LSRC building

27708 Durham

NC

US

seamap-contact@duke.edu

http://seamap.env.duke.edu

地理涵蓋範圍

Alaska,Eastern Alaska,Gulf of Alaska,Dixon Entrance,Cape Suckling

界定座標範圍	緯度南界經度西界 [54.454, -143.953], 緯度北界經度東界 [60.133, -131.005]

分類群涵蓋範圍

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Order	Cetacea (cetaceans), Cetacea (cetaceans)
Genus	Mesoplodon (beaked whales)
Species	Balaenoptera physalus (Fin Whale), Eumetopias jubatus (Steller Sea Lion), Eschrichtius robustus (Gray Whale), Lagenorhynchus obliquidens (Pacific White-sided Dolphin), Megaptera novaeangliae (Humpback Whale), Orcinus orca (Killer Whale), Phocoenoides dalli (Dall's Porpoise), Physeter macrocephalus (Sperm Whale), Phocoena phocoena (Harbor Porpoise), Phoca vitulina (Harbor Seal)

時間涵蓋範圍

起始日期 / 結束日期	1997-05-28 / 1997-07-28

計畫資料

無相關描述

計畫名稱	NMML Small Cetacean Aerial Survey 1997
經費來源	NA

參與計畫的人員:

Roderick Hobbs

擁有者

取樣方法

NA

研究範圍	NA

方法步驟描述:

NA

收藏資料

蒐藏名稱	zd_115
蒐藏編號	zd_115
上層採集品識別碼	OBIS-SEAMAP

額外的詮釋資料

marine, harvested by iOBIS

目的	A 3-year survey began in 1997 to complete a new abundance estimate by 1999. This survey will also include an abundance estimate for Dalls porpoise (Phocoenoides dalli). Once the 3 years of surveys are completed, the data will be used to estimate annual abundance of harbor porpoise and Dalls porpoise, which is one of the key pieces of information needed to manage marine mammal-fishery interactions, as required under the Marine Mammal Protection Act.
替代的識別碼	http://ipt.env.duke.edu/resource?r=zd_115

目的

A 3-year survey began in 1997 to complete a new abundance estimate by 1999. This survey will also include an abundance estimate for Dalls porpoise (Phocoenoides dalli). Once the 3 years of surveys are completed, the data will be used to estimate annual abundance of harbor porpoise and Dalls porpoise, which is one of the key pieces of information needed to manage marine mammal-fishery interactions, as required under the Marine Mammal Protection Act.

替代的識別碼

http://ipt.env.duke.edu/resource?r=zd_115